Bank of America and other heavy hitters defrauded cities and counties by conspiring to fix, and lie about, the LIBOR rates, four California counties and cities and a Bay Area utilities district claim in separate federal antitrust complaints.

The London Interbank Offered Rate is the rate banks charge one another for short-term loans necessary to carry on their business. More than $300 trillion in financial derivatives are tied to LIBOR rates.

Barclays Bank last year settled criminal allegations of fixing LIBOR rates, leading to multiple lawsuits and investigations of major banks on at least two continents.